I've got the DPM + insulation down on a block and beam floor. It's 150mm PIR. Screed will be 55mm + 20mm floor covering in the bedroom.
I have an adjacent new bathroom which I wanted to be a tiled wet room, and want this level with the bedroom floor at the door threshold, or very close.
I also want the shower tray flush with the rest of the bathroom floor, which means figuring it out now, before I lay the screed.
I'm looking for any tips on embedding the shower tray/forma in the screed. I'm thinking I need to have some plywood underneath the tray first, at least to make up the height, but is this enough support if I lay this on the PIR and then the shower tray on top of that? I'm assuming once the screed is down, the weight of this means the PIR isn't moving - just feel i need something more solid underneath the tray....18mm ply minimum?? Would I let the screed flow over the edges of the plywood to hold it in place... ie. by shuttering it off?
So many questions, and searching for the answers....
I have an adjacent new bathroom which I wanted to be a tiled wet room, and want this level with the bedroom floor at the door threshold, or very close.
I also want the shower tray flush with the rest of the bathroom floor, which means figuring it out now, before I lay the screed.
I'm looking for any tips on embedding the shower tray/forma in the screed. I'm thinking I need to have some plywood underneath the tray first, at least to make up the height, but is this enough support if I lay this on the PIR and then the shower tray on top of that? I'm assuming once the screed is down, the weight of this means the PIR isn't moving - just feel i need something more solid underneath the tray....18mm ply minimum?? Would I let the screed flow over the edges of the plywood to hold it in place... ie. by shuttering it off?
So many questions, and searching for the answers....